Which of the Following Observations Makes Current Population Growth Rates

Which of the following observations makes current population growth rates more disturbing?

A) The developed world has much higher growth rates than the developing world.
B) Rapid rates of population growth lead to increased demand for natural resources.
C) Population growth globally has stopped, which raises concerns about finding future workers.
D) Globally, females now far exceed males.
E) The United Nations has placed limits on the allowable population growth of developing countries.